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Journal of the Air & Waste Management Association

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https://www.readbyqxmd.com/read/30431395/pseudo-source-parameters-for-flares-derivation-implementation-and-comparison
#1
Michael J Zelensky, Brian W Zelt
No abstract text is available yet for this article.
November 15, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30427285/recent-spatial-gradients-and-time-trends-in-dhaka-bangladesh-air-pollution-and-their-human-health-implications
#2
Md Mostafijur Rahman, Shakil Mahamud, George D Thurston
Dhaka, the capital of Bangladesh, is among the most polluted cities in the world. This research evaluates seasonal patterns, day-of-week patterns, spatial gradients, and trends in PM2.5 (< 2.5µm in aerodynamic diameter), PM10 (< 10µm in aerodynamic diameter), and gaseous pollutants concentrations (SO2 , NO2 , CO, and O3 ) monitored in Dhaka from 2013 to 2017. It expands on past work by considering multiple monitoring sites and air pollutants. Except for ozone, the average concentrations of these pollutants showed strong seasonal variation, with maximum during winter and minimum during monsoon, with the pollution concentration of PM2...
November 14, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30427279/trends-in-passenger-exposure-to-carbon-monoxide-inside-a-vehicle-on-an-arterial-highway-of-the-san-francisco-peninsula-over-30-years-a-longitudinal-study
#3
Peter Flachsbart, Wayne Ott
This paper describes a long-term trend study of passenger exposure to carbon monoxide (CO) inside a vehicle travelling on an arterial highway in Northern California. CO exposure was measured during four field surveys on State Route #82 (El Camino Real) on the San Francisco Peninsula in 1980-1981, 1991-1992, 2001-2002, and 2010-2011. Each field survey took at least 12 months. Fifty trips from each survey-for a total of 200 trips-were matched by date, day of the week, and starting time of the day to facilitate comparisons over three decades...
November 14, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30396327/distribution-of-mercury-in-the-combustion-products-from-coal-fired-power-plants-in-guizhou-southwest-china
#4
Songtao Liu, Jianmeng Chen, Yue Cao, Haikuan Yang, Chuanmin Chen, Wenbo Jia
Method 30B and the Ontario Hydro Method (OHM) were used to sample the mercury in the flue gas discharged from the seven power plants in Guizhou Province, southwest China. In order to investigate the mercury migration and transformation during coal combustion and pollution control process, the contents of mercury in coal samples, bottom ash, fly ash, and gypsum were measured. The mercury in the flue gas released into the atmosphere mainly existed in the form of Hg°. The precipitator shows a superior ability to remove Hgp (particulate mercury) from flue gas...
November 5, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30395782/the-economic-benefits-of-fulfilling-the-world-health-organisation-s-limits-of-particulates-a-case-study-in-algeciras-bay-spain
#5
Rocío Román-Collado, Juan Jiménez de Reyna
Implications PM2.5 has a greater concentration in industrial localities and is linked to the industrial activity. When the particulate matter pollution is reduced to the levels recommended by the WHO in an industrialised area such as Algeciras (Spain), 182 deaths which would be avoided. The result shows that the economic benefit that would come out with the cost of illness valuation is 5,329,110€ and from the value of statistical life is 414,787,113€.
November 5, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30388932/development-of-the-typical-driving-cycle-for-buses-in-hanoi-vietnam
#6
Yen-Lien T Nguyen, Trung-Dung Nghiem, Anh-Tuan Le, Ngoc Dung Bui
This paper develops a typical driving cycle for buses in Hanoi without deconstructing the naturalistic driving patterns. Real velocity-time data were collected along 15 routes in inner city. The raw velocity-time series were preprocessed to remove errors, smooth and denoise. These data, then, were tested for the stationary before use in the driving cycle construction process based on Markov chain theory. The fourteen representative parameters of driving cycle including vehicle specific power (VSP), which were extracted from 33 driving cycle parameters by the hierarchical agglomerative clustering, were used to integrate the features of realistic driving patterns into the typical driving cycle...
November 2, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30373487/comparison-of-modelling-with-empirical-calculation-of-diffuse-and-fugitive-methane-emissions-in-a-spanish-landfill
#7
Carlos Sánchez, Mª Del Mar de la Fuente, Adolfo Narros, Isabel Del Peso, Encarnación Rodríguez
One of the most significant environmental problems arising from landfills is the emission of methane into the atmosphere. In this study, methane emissions from a currently in use Spanish landfill were modeled as well as being experimentally measured using a two-step method. The first step involved a qualitative walkover survey to detect where gases were being emitted on the surface of the landfill. The second stage comprised a quantitative analysis of these surface methane emissions at a selected number of points on the landfill surface using a specially designed flux chamber...
October 29, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30359548/detection-limits-of-optical-gas-imagers-as-a-function-of-temperature-differential-and-distance
#8
Yousheng Zeng, Jon Morris
Optical Gas Imaging (OGI) is an effective tool for detecting gas leaks from process equipment. Despite the fact that OGI has been used for leak detection for over a decade, its detection limit is an elusive performance metric and has not been systematically characterized and quantified like other detection instruments. A substantial body of research has been performed that has shed some light on the OGI detection limits and the factors that dictate the detection limits. The OGI detection limit expressed as ppm-m and ppm now can be quantified as a function of ΔT (differential temperature between the gas plume and the background), the OGI camera type, and the specific gas in question...
October 25, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30352009/factors-influencing-appropriate-management-of-household-hazardous-waste-in-nakhon-nayok-thailand-a-multilevel-analysis
#9
Prat Intarasaksit, Somsak Pitaksanurat
Household hazardous products contain hazardous chemicals so when discarding these products a household hazardous waste (HHW) stream is created. HHW is a major environmental problem in Thailand, and yet HHW has received scant attention so management is often inadequate or inappropriate. The objective of the current study was to investigate the factors associated with appropriate HHW management in Thailand. Data were collected using a structured questionnaire completed during randomly assigned household interviews in Nakhon Nayok province, Thailand between February and May 2017...
October 23, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30339516/real-time-black-carbon-personal-exposure-levels-in-microenvironments-home-to-home-on-a-round-trip-hanoi-singapore
#10
Hoang Anh Le
No abstract text is available yet for this article.
October 19, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30339494/air-pollutant-source-characterization-using-the-revised-regional-haze-tracking-metric-and-a-photochemical-grid-model-and-implications-for-regional-haze-planning
#11
Patricia Brewer, Gail Tonnesen, Ralph Morris, Tom Moore, Uarporn Nopmongcol, Debbie Miller
The 2017 revisions to the Regional Haze Rule clarify that visibility progress at Class I national parks and wilderness areas should be tracked on days with the highest anthropogenic contributions to haze (impairment). We compare the natural and anthropogenic contributions to haze in the western U.S. in 2011 estimated using the Environmental Protection Agency (EPA)'s recommended method and using model projections from the Comprehensive Air Quality Model with Extensions (CAMx) and the Particulate Source Apportionment Tool (PSAT)...
October 19, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30339492/air-quality-and-health-benefits-from-potential-coal-power-plant-closures-in-texas
#12
Brian Strasert, Su Chen Teh, Daniel S Cohan
No abstract text is available yet for this article.
October 19, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30339491/urban-energy-environment-efficiency-in-china-based-on-dynamic-meta-frontier-sbm
#13
Ying Li, Yung-Ho Chiu, Liang Chun Lu
Rapid economic growth in China has resulted in a significant increase in particulate matter (PM2.5 ) and Sulfur Dioxide (SO2 ), the reduction of which has become a primary government focus. However, as the energy consumption and air pollutant emissions in Chinese cities have very significant regional characteristics, individual governance measures are necessary. This study used 2013 to 2016 energy consumption data from 31 Chinese cities to evaluate the dynamic efficiency of the urban environments. Labor, Fixed Assets, and Energy Consumption were taken as the inputs, GDP was taken as the output, and particulate matter (PM2...
October 19, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30339490/study-on-transformation-and-enrichment-behavior-of-selenium-in-particulate-matter-in-combustion-flame
#14
Jianyi Lu, Jingwen Lu, Xudan Ren, Shuwei Zhang
An ethylene/air inverse diffusion flame (IDF) burner was employed to generate a stable flame, and selenium was introduced into the combustion flame in vapor phase under different air-fuel ratio (A/F) with SO2 additive. At different height above burner (HAB) along the flame edge, selenium of different speciation (gaseous selenium and particulate selenium) was sampled via the U.S. EPA method 29, and the samples were determined by hydride generation atomic fluorescence spectrometry (HG-AFS), in order to study the mechanism of transformation and enrichment behavior of selenium during the combustion process...
October 19, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30325269/adsorption-kinetics-and-modelling-of-h-2-s-by-treated-waste-oil-fly-ash
#15
Zaheer Aslam, Ibnelwaleed A Hussein, Reyad A Shawabkeh, Mohammad Anwar Parvez, Waqar Ahmad, Ihsanullah
Waste oil fly ash (OFA) collected from disposal of power generation plants was treated by physico-chemical activation technique to improve the surface properties of OFA. This synthesized material was further used for potential H2 S adsorption from synthetic natural gas. The raw OFA was basically modified with the mixture of acids (20% HNO3 and 80% H3 PO4 ) and it was further treated with 2M KOH to enhance the surface affinity as well as surface area of synthesized activated carbon. Correspondingly, it enhanced the adsorption of H2 S...
October 16, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30325261/modeling-and-model-performance-evaluation-of-sewage-sludge-gasification-in-fluidized-bed-gasifiers-using-aspen-plus
#16
Juan Manuel de Andrés, Michel Vedrenne, Matteo Brambilla, Encarnación Rodríguez
A model was developed to simulate the sewage sludge gasification in an atmospheric fluidised bed gasifier using Aspen Plus. The model here presented was based on the Gibbs free energy minimisation and the restricted equilibrium method was used to calibrate it against previously published experimental data obtained in a lab-scale gasification plant. A sensitivity analysis of the model was carried out by modifying parameters such as the temperature, equivalence ratio (ER) and the steam-to-biomass ratio. The modeled results were in good agreement with the experimental data (especially when air was used as gasifying agent) and reproduced satisfactorily the experimental trends found for the gas composition, the carbon conversion (Xc) and the cold gas efficiency (CGE) under different gasification conditions...
October 16, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30303768/a-novel-bagging-ensemble-approach-for-predicting-summer-time-ground-level-ozone-concentration
#17
S Mohan, Packiam Saranya
No abstract text is available yet for this article.
October 10, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30299214/influence-of-deployment-time-and-surface-wind-speed-on-the-accuracy-of-measurements-of-greenhouse-gas-fluxes-using-a-closed-chamber-method-under-low-surface-wind-speed
#18
Yu Liu, Chaoyuan Wang, Luyu Ding, Zixin Wang, Guanghui Teng, Zhengxiang Shi, Baoming Li
No abstract text is available yet for this article.
October 9, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30296389/the-relationship-between-atmospheric-pollutant-emissions-and-fuel-qualities-of-inland-vessels-in-jiangsu-province-china
#19
Yali Cao, Wei Zhang, Xia Wang, Liang Wu, Guangren Qian
No abstract text is available yet for this article.
October 8, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/30296386/projected-changes-in-particulate-matter-concentrations-in-the-south-coast-air-basin-due-to-basin-wide-reductions-in-nitrogen-oxides-volatile-organic-compounds-and-ammonia-emissions
#20
Devoun R Stewart, Emily Saunders, Roberto Perea, Rosa Fitzgerald, David E Campbell, William R Stockwell
No abstract text is available yet for this article.
October 8, 2018: Journal of the Air & Waste Management Association
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